Kathetron
一种有外栅极的三极管, 辉光放电管
🗣️ 情景例句
I'm in Shanghai looking for possible suppliers.
我此次来上海是想寻找可能合作的供应商。
How much of a volume discount are you prepared to offer?
总折扣你们准备提供多少？
By this time, however, three men had come into the ring and they quickly dragged the drunk to safety.
好像连牛也在为他感到遗憾，